echnical Information Brand: Makita Model: DGA404 Product Type: Cordless Angle Grinder Battery Voltage: 18V LXT Li-Ion Motor Type: Brushless (BL Motor) Wheel Diameter: 100 mm (4') Bore Size: 16 mm No Load Speed: 8, 500 RPM Spindle Thread: M10 × 1.25 Battery Type: Lithium-Ion Switch Type: Slide Switch Features: Brushless motor for higher efficiency Automatic Speed Change Technology Electronic current limiter Anti-restart function Soft start Ergonomic side handle Compact and lightweight design Cordless operation for maximum portability Suitable for cutting, grinding, deburring, rust removal, weld preparation, and polishing of metal, steel, and construction materials.